ADJUSTABLE HIGH PRECISION SHUNT REGULATOR GENERAL DESCRIPTION NJM

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ADJUSTABLE HIGH PRECISION SHUNT REGULATOR GENERAL DESCRIPTION NJM

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NJM1431A
ADJUSTABLE HIGH PRECISION SHUNT REGULATOR
GENERAL DESCRIPTION NJM1431A precision shunt regulator. Compared conventional 431, NJM1431A offers higher voltage accuracy small package availability support wide range applications. NJM1431AU NJM1431AF PACKAGE OUTLINE
FEATURES Operating Voltage VREF Precision Voltage Reference 2.465V±1% 2.9mm 1.5mm (SOT23) package Adjustable Output Voltage Bipolar Technology Package Outline SOT-89 (3pin), MTP5
BLOCK DIAGRAM
CATHODE
CONFIGURATION
REFERENCE
REFERENCE ANODE CATHODE
NJM1431AU
VREF
ANODE
REFERENCE
ANODE CATHODE
NJM1431AF
Ver.2007-02-07
NJM1431A
ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL Cathode Voltage Continuous Cathode Current Reference Input Current IREF Power Dissipation Operating Temperature Range Storage Temperature Range TOPR TSTG MAXIMUM RATINGS -100 -0.05 (SOT-89) (MTP5) +150 UNIT
RECOMMENDED OPERATING CONDITIONS (Ta=25°C) PARAMETER SYMBOL MIN. TYP. Cathode Voltage VREF Cathode Current
MAX.
UNIT
ELECTRICAL CHARACTERISTICS (IK=10mA, Ta=25°C) PARAMETER Reference Voltage Reference Voltage Change Cathode Voltage Change Reference Input Current Minimum Input Current Cathode Current (Off Cond.) Dynamic Impedance SYMBOL VREF VREF/ IREF IMIN IOFF TEST CONDITION VKA=VREF VREF R1=10k, VKA=VREF, VREF=1% VKA=36V, VREF=0V VKA= VREF, f1kHz 100mA (*1) (*2) (*2) (*2) (*1) (*3) (*1) MIN. 2.440 TYP. 2.465 ±1.4 ±1.0 MAX. 2.490 ±2.7 ±2.0 UNIT mV/V mV/V
TEMPERATURE CHARACTERISTICS (IK=10mA, -40°C 85°C) PARAMETER SYMBOL TEST CONDITION Reference Voltage Change Reference Input Current Change VREF IREF VKA=VREF R1=10k, (*1) (*2)
MIN.
TYP.
MAX.
UNIT
maximum value "Dynamic Impedance", "Reference Voltage Change" "Reference Input Current Change" determined based sampling evaluation from initial production lots, thus tested production test. Therefore, these values reference design purpose only. voltage includes error. (*1): Test Circuit (Fig.1) (*2): Test Circuit (Fig.2) (*3): Test Circuit (Fig.3)
Ver.2007-02-07
NJM1431A
TEST CIRCUIT
INPUT INPUT IREF INPUT IOFF
VREF
VREF
Fig.1 VKA=VREF test circuit VO=VKA=VREF
Fig.2 VKA>VREF test circuit
VREF IREF
Fig.3 IOFF test circuit
POWER DISSIPATION AMBIENT TEMPERATURE
Power Dissipation (mW)
MTP5 SOT-89
Ambient Temperature (°C)
Ver.2007-02-07
NJM1431A
TYPICAL CHARACTERISTICS
Reference Voltage Cathode Current Reference Voltage VREF 2.48 2.46 2.44 2.42
Ta=25oC)
2.49 Reference Voltage VREF 2.48 2.47 2.46 2.45
Reference Voltage Temperature (VKA=VREF IK=10mA)
Cathode Current (mA)
2.44 Ambient Temperature
Reference Voltage Cathode Voltage =10mA, R1=Variable, R2=10k, Ta=25oC) 2.49 Reference Voltage VREF 2.48 2.47 2.46 2.45 2.44
Reference Input Current IREF (uA)
Reference Input Current Temperature =10mA, R1=10k,
Ambient Temperature
Cathode Voltage
Safety Operating Boundary Condition =Ceramic Capacitor, Ta=25 0.01 Stable Operaion Region
Dynamic Impedance |ZKA|
Dynamic Impedance 0.001 0.01 Cathode Current Frequency (kHz) (IK=1 100mA, =VREF, Ta=25oC)
Cathode Current (mA)
Unstable Operaion Region
Note) Oscillation might occur while operating within range safety curve. that, necessary make ample margins taking considerations fluctuation device.
Output Capacitor COUT (uF)
Ver.2007-02-07
NJM1431A MEMO
[CAUTION] specifications this databook only given information without guarantee regards either mistakes omissions. application circuits this databook described only show representative usages product intended guarantee permission right including industrial rights.
Ver.2007-02-07

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